Bench-dog



.(NO Model.)

1D. WHITMAN.

` 1 BENCH DOG. Y y No. 249,563. "Patented N0v.15,1881.

IUNITED STATES PATENT OFFICE.

CHARLES P. WHITMAN, OF ATHOL, MASSACHUSETTS.

BENCH-DOG.

SPECIFICATION forming part of Letters Patent No. 249,563, dated November 15, 1881.

Appnentitm filed september '1881. (No model.)

To alt whom it may concern i i Be it known that I, CHARLES P. WHITMAN, a citizen of the United States, residing at Athol, in the county ot' Worcester and State of Massachusetts, have invented certain new and useful Improvements in Bench Hooks or Dogs; and I do hereby declare that the following is a full, clear, andeXact description of the same, reference being had tothe annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure l of the drawings is a perspectivev viewof my invention with the toothed edge of the bearing-plate in position for use, and Fig. 2 is a similar view with the broad face of the plate in position for use.

The present invention has relation to that class ot devices used by carpenters and others which are adapted to be connected to a bench or table, and usually termed bel1cl1dogs,` its purpose being to hold the work while being planed and finished.

Previous to my invention the ben.ch-dogs usually employed consisted ot' an upright sh aft or shank having upon its upper end the dogs, said shaft or shank being vertically adjustable, and also reversible, to brin g either the plain or toothed end ot' the dog in position for use, as circumstances may require.

It is the object of the present invention to improve the construction of this class of de- Vices, whereby the dogis held in position more firmly and effectually,`so as to prevent any possible vibrations ofthe same, and to present a smooth and wide surface to hold the work against wliileitis beingtinished, that it may not be bruised or otherwise injured. These several objects I attain by the construction substantially as" shown in the drawings and hereinafter described. y

In theaccompanyingdrawings,Arepresents the frame, of suitable metal, which is counter- Sunk or mortised into the bench or table so that its upper surface comes ush with that of the bench.. or table, the frame being secured thereto `by screws or other suitable fastenin gs. The frame A is cast with a bowl, a, to receive the head of the thumb-screw through said bowl and bears in agroove, c, in a sliding bar, d. This barclias grooves upon both its sides, and instead of passing down through the frame Ain an upright or vertical position, as heretofore, it passes through the frame in a slanting position or at an acute angle, and is held at the desired elevation bythe thumb-screw b. The bar d at its upper end has the plate B, one edge of which is formed with teeth e, against which the material to be planed is brought, the screw b firmly holding the bar at any required elevation and in perfeet line without the danger of any lateral vibration as the point of the screw enters the groove c in the bar, this being important where fine work is being iinished.

When the plate B and bar d is in the position as shown in Fig, 2, a large, wide, and smooth surfaceot' the plate is presented to hold the work against when it is being'nished, that it may not be bruised, scratched, or otherwise injured, as would be likely did the edge only ot' the plate come in contact with the work.

The angle at which the bard passes through the frame A and held by the screw bi and the position ofthe plate B with relation to the bar are of great importance, the angle ot' the' bar .giving an increased leverage power. Hence a slight pressure frornthe thumb-screw sets the being comparatively little strain or wear on the screw.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a bench hook or dog, the combination, with the frame A and thumb-screw b, of the bar solid and holds it firmly in position, there bar d, passing through the frame at an acute angle,and spurs at one end of the plate B, said bar heilig adjustable and reversible, substantially as and for the purpose set forth.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

Witnesses:

\ E. V. Wilson,

b, which passes JOHN J. CAXETER. 

